.vip-not-opened {
    width: 100vw;
    height: 100vh;
    background-image: url("https://img0.baidu.com/it/u=3630664499,3446154811&fm=253&fmt=auto&app=138&f=JPEG?w=500&h=888");
    background-repeat: no-repeat;
    background-size: cover;
}

.button-box {
    position: fixed;
    top: 80vh;
    left: 15%;
    width: 70%;
    height: 10vw;
    background-color: aqua;
}